@propertyWrapper
struct SmallNumber {
        private var maximum: Int
    private var number: Int


    var wrappedValue: Int {
        get { return number }
        set { number = min(newValue, maximum) }
    }


    init() {
        maximum = 12
        number = 0
    }
    init(wrappedValue: Int) {
        maximum = 12
        number = min(wrappedValue, maximum)
    }
    init(wrappedValue: Int, maximum: Int) {
        self.maximum = maximum
        number = min(wrappedValue, maximum)
    }
}


struct ZeroRectangle {
    @SmallNumber var height: Int
    @SmallNumber var width: Int
}